1967.0000000;-2.6812775
1968.0000000;-2.2954714
1969.0000000;-2.8563576
1970.0000000;-1.9870049
1971.0000000;-2.7908790
1972.0000000;-1.3623137
1973.0000000;-2.8110185
1974.0000000;-1.8321447
1975.0000000;-1.8031301
1976.0000000;-2.2689214
1977.0000000;-1.0117443
1978.0000000;-0.8878237
1979.0000000;-2.0141649
1980.0000000;-1.1861305
1981.0000000;-1.5889621
1982.0000000;-2.7492604
1983.0000000;-2.1064737
1984.0000000;-0.7439851
1985.0000000;-2.0866432
1986.0000000;-2.3934207
1987.0000000;-1.9255867
1988.0000000;-2.2276523
1989.0000000;-2.3661265
1990.0000000;-2.0589037
1991.0000000;-2.0974565
1992.0000000;-2.1341810
1993.0000000;-1.9599713
1994.0000000;-2.5497358
1995.0000000;-1.5899029
1996.0000000;-2.6061726
1997.0000000;-3.3356016
1998.0000000;-3.0141349
1999.0000000;-2.5826023
2000.0000000;-3.1498308
2001.0000000;-2.6612368
2002.0000000;-2.9252832
2003.0000000;-4.6147938